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Serhud [2]
4 years ago
13

What is the value of n in the equation 3n + 2(n + 2) = 9n + 12? −4 −2 2 4

Mathematics
1 answer:
Svet_ta [14]4 years ago
3 0

Answer:

-2

Step-by-step explanation:

3n+2n+4=9n+12

5n+4=9n+12

5n-9n=-4+12

-4n=8

n=8/-4

n= -2

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Step-by-step explanation:

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3 years ago
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7 0
4 years ago
How to simplify this so it equal to c
alukav5142 [94]
Combine terms using exponent rules:
a^m *a^n = a^{m+n} \\  \\ \frac{a^m}{a^n} = a^{m-n}

First rewrite everything so that you have 2^m terms and x^m terms

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3 0
4 years ago
What is a speed of 55 mph equivalent to in units of m/s? ( 1 mile = 1609 m, 1 hour = 3600 s)
koban [17]

9514 1404 393

Answer:

  about 24.58 m/s

Step-by-step explanation:

Multiply by conversion factors that change the units, but not the value.

  (55 mi/h) × (1609 m/mi) × (1 h)/(3600 s) = (55×1609/3600) m/s

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_____

<em>Additional comment</em>

The exact conversion uses 1609.344 meters per mile, so gives exactly 24.5872 m/s.

5 0
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19.796 to 1 significant figure
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Answer:

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I hope this helps

8 0
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